<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索和添加区域 -->
      <el-row :gutter="20">
        <el-col :span="9">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 状态域卡槽 true、 false -->
          <!-- 作用域卡槽接收scope对象，scope.row代表data中userlist数组 -->
          <template slot-scope="scope">
            <!-- {{ scope.row }} -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <!-- slot-scope="scope"  会报错 解决办法：          直接写 slot-scope 保存运行！要么下面  不写scope对象. -->
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogColsed">
      
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email" ></el-input>
        </el-form-item>

        <el-form-item label="手机" prop="mobile">
        <el-input v-model="editForm.mobile" ></el-input>
        </el-form-item>
      </el-form>
      
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo"
          >确 定</el-button
        >
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
        <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close = 'setRoleDialogClosed'
      >
      <div>
        <p>当前用户：{{userInfo.username}}</p>
        <p>当前角色：{{userInfo.role_name}}</p>
        <p>分配新角色
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }

    var checkMobile = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        //搜索关键字
        query: '',
        //当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象???
      editForm:{},
      //修改表单的验证规则对象
      editFormRules:{
        email: [
          {required:true,message:'请输入用户邮箱',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile: [
          {required:true,message:'请输入用户手机',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ]
      },

      //设置分配角色对话的显示与隐藏
      setRoleDialogVisible:false,

      //需要被分配角色的用户信息
      userInfo:{},

      //所有角色的数据列表
      roleList:[],


      selectedRoleId:''
      
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      console.log(res)
      if (res.meta.status != 200) {
        return this.$message.error('获取列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听 页码值 改变事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch 开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功！')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        //可以发起添加用户请求
        const { data: res } = await this.$http.post('users', this.addForm)

        if (res.meta.status != 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功')
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const {data:res} = await this.$http.get('users/'+id)

      if(res.meta.status !==200 ) {
        return this.$message.error('查询用户信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogColsed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return
        // console.log(valid);
        //发起修改用户信息的数据请求
        const {data:res} = await this.$http.put('users/'+this.editForm.id,
        {
          email:this.editForm.email,
          mobile:this.editForm.mobile
        })

        if (res.meta.status !==200 ) {
          return this.$message.error('更新用户信息失败！')
        }

        //关闭对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList();
        //提示修改成功
        this.$message.success('更新用户信息成功')
      })
    },
    //根据ID删除对应的用户信息
      async removeUserById(id) {
      const confirmResult =await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch((err)=>{return err})
      // console.log(confirmResult)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const {data:res} = await this.$http.delete('users/' +id)

      if(res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }

      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    async setRole(userinfo){
      
      this.userInfo = userinfo

      //在展示对话框之前，获取所有角色的列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status !==200){
        return this.$message.error('获取角色列表失败！')
      }

      this.roleList = res.data
      console.log(this.roleList);

      this.setRoleDialogVisible =true
      
    },
    //点击按钮，分配角色
    async saveRoleInfo(){
      
      // 一、先看用户有没有选择 下拉列表里面的id数据
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色！')
      }
      //二、发送请求，改id
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

      if(res.meta.status!=200){
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')

      this.getUserList()
      this.setRoleDialogVisible = false;

    },
    //监听分配角色对话框的关闭事件：当关闭后，都要初始化下拉列表里面的数据
    setRoleDialogClosed(){
      this.selectedRoleId='',
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped></style>
